docs: def get_section_key_line(self, data, key, opt_extension=':'):
          """Get the next section line for a given key.
  
          :param data: the data to proceed
          :param key: the key
          :param opt_extension: an optional extension to delimit the opt value
  
          """
          return super(GoogledocTools, self).get_section_key_line(data, key, opt_extension)